OPPO K13x 5G (8GB RAM +128GB) vs Vivo Y51A 2021
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Overview
| Specs Score | 79 / 100 | 79 / 100 |
| Display Resolution | 720 x 1604 pixels | 1080 x 2408 pixels Better Resolution |
| Screen To Body Ratio | ~ 89.9% Less Bezels | ~ 82.2% |
| CPU Clock Speed | 2.4 GHz Faster Clock Speed | 2 GHz |
| Front Camera | 8 MP | 16 MP Better Front Camera Resolution |
| Thickness | 7.9 mm Slimmer | 8.4 mm |
| Battery | 6000 mAh Bigger Battery | 5000 mAh |
| Unique Features | 5G | No |
General
| Country of Origin | India | |
| Model | K13x | Y51A 2021 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | June 23, 2025 | |
| In The Box | Handset, Charger, USB Data Cable, Sim Ejector Tool, Quick Guide, Protective Case |
Design
| Dimensions | 76.2 x 165.7 x 7.9 mm | 75.3 x 163.9 x 8.4 mm |
| Weight | 194 g | 188 g |
| Colors | Midnight Violet |
Display
| Type | Color HD+ LCD (16.7 Million) | Color IPS LCD Screen (16M Colors) |
| Touch | Yes, 240 Hz Touch Sampling Rate | Yes |
| Size | 6.67 inches, 720 x 1604 pixels, 120 Hz | 6.58 inches, 1080 x 2408 pixels |
| Aspect Ratio | 20:9 | 21:9 |
| PPI | ~ 264 PPI | ~ 415 PPI |
| Screen to Body Ratio | ~ 89.9% | ~ 82.2% |
| Brightness | Brightness: 850nit (Normal), 1000nit (HBM) | |
| Features | 10 Touch Points, Contrast Ratio: 1500:1 (Typical), Color Saturation: 83% NTSC, Color Gamut: 88% DCI-P3 (Vivid Mode), 100% sRGB (Natural Mode), Supports Dark Mode, DC Dimming, Supports Eye Comfort, Supports Sunlight Screen | |
| Notch | Yes, Punch Hole | Yes, Water Drop Notch |
Memory
| RAM | 8 GB | 8 GB |
| Storage | 128 GB | 128 GB |
| Storage Type | UFS | |
| Card Slot | Yes, upto 2 TB | Yes, upto 1 TB |
Connectivity
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| 5G Bands | n1/n3/n5/n8/n28B/n40/n41/n77/n78 | |
| VoLTE | Yes | Yes, Dual Stand-By |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Wifi Version | WiFi 5 (802.11 ac), 802.11 b/g/a/n, WLAN 2.4 GHz, WLAN 5 GHz, Dual Band (WiFi 2.4 GHz, WiFi 5 GHz) | |
| Bluetooth | Yes, v5.4, SBC, AAC, aptX, aptX HD, and LDAC | Yes, v5.0, A2DP, LE |
| USB | Yes, USB-C v2.0 | Yes, USB-C v2.0 |
| USB Features | USB Tethering, USB on-the-go, USB Charging | USB on-the-go, USB Charging |
Extra
| GPS | Yes, BEIDOU, GPS, GLONASS, GALILEO, QZSS, AGPS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Fingerprint Sensor | Yes, Side | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Proximity Sensor, Ambient Light Sensor, E-Compass, Accelerometer | Accelerometer, Ambient Light Sensor, Proximity Sensor, E-compass, Entity Gyroscope |
| 3.5mm Headphone Jack | Yes | Yes |
| AI Features | AI Eraser, AI Clarity Enhancer, AI Smart Image Matting 2.0, AI Reflection Remover, AI Unblur, AI Motion, AI Portrait, AI Reimage, AI Summary, AI Writer | |
| Water Resistance | 1.18 m upto 1.05 min | |
| Splash Resistant | Yes | |
| IP Rating | IP65 | |
| Dust Resistant | Yes | |
| Extra Features | Dual-view Video, Outdoor Mode and Glove Touch, Ultra-Volume Mode, Trinity Engine, Screen Translator, Google Gemini App |
Camera
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) OV50D, 1/2.88 inch Sensor Size, 0.61um Pixel Size, CMOS(4-in-1), FOV: 76 Degree, Equivalent Focal Length: 27mm, 5P Lens, Effective Focal Length: 3.98mm, PDAF 2 MP ƒ/2.4 (Depth Sensor) 1.75um Pixel Size, CMOS, 1/5 inch Sensor Size, FOV: 89 Degree, Equivalent Focal Length: 22mm, 3P Lens, Effective Focal Length: 1.77mm, Fixed Focus) | 48 MP ƒ/1.8 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 2 MP ƒ/2.4 (Macro) Macro |
| Auto Focus | Yes | Yes |
| Features | Photo, Video, Portrait, Night, Pro, Panorama, Slo-Mo, Dual View Video, Timelapse, Sticker, Hypertext, Hi-Res, Google Lens, Supports Fill Light for Video Shooting | Portrait, Photo, Video, Pano, Live Photo, Slo-Mo, Time-Lapse, Pro, DOC, Super Night Mode |
| Video Recording | 1080p @ 60 fps FHD, 720p @ 30 fps HD | 4K @ 30 fps UHD, 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 8 MP ƒ/2 (Wide Angle) 1.12um Pixel Size, CMOS, 1/4 inch Sensor Size, FOV: 80 Degree, Equivalent Focal Length: 25mm, 4P Lens, Effective Focal Length: 2.66mm, Fixed Focus Punch Hole | 16 MP ƒ/2 (Wide Angle) |
| Front Video Recording | 1080p @ 30 fps FHD, 720p @ 30 fps HD | 1080p @ 30 fps FHD |
Technical
| OS | Android v15 | Android v11 |
| Custom UI | ColorOS 15 | |
| Chipset | Mediatek Dimensity 6300 | Qualcomm Snapdragon 662 |
| CPU | 2.4 GHz, Octa Core Processor | 2 GHz, Octa Core Processor |
| Core Details | 2X Arm Cortex-A76@2.4GHz & 6X Arm Cortex-A55@2.0GHz | 4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver |
| GPU | ARM Mali-G57 MC2 | Adreno 610 |
| Java | No | No |
| Browser | Yes | Yes, supports HTML5 |
Multimedia
| Yes | Yes | |
| Music | MP3, AAC, AMR, APE, OGG, FLAC, WAV, MIDI, WMA | Yes |
| Video | AVI, 3GP, MP4, WMV, MKV, MOV, ASF, FLV, Webm, TS | Yes |
| FM Radio | Yes, with FM Recording | Yes |
| Document Reader | Yes |
Battery
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 6000 mAh, Li-ion Battery | 5000 mAh, Li-Po Battery |
| Fast Charging | Yes, 45W SUPERVOOCTM Flash Charging | Yes, 18W Fast Charging |
Discuss
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